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Increased fuel consumption after MFA following AGR decommissioning

 
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reuselkopp
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Post31-08-2010, 9:05    Subject: Increased fuel consumption after MFA following AGR decommissioning Quote

Hello everyone,

I'm confused again icon_confused.gif.
Nachdem ich nun mein AGR Ventil behandelt bzw. einen Fremdkörper zwischen Ansaugbrücke und AGR Ventil eingebracht habe verwirrt mich die Verbrauchsanzeige der MFA. Trotz gleicher Fahrweise wie vorher, zeigt mir die MFA einen erheblich höheren Verbrauch (0,6L), als vorher an. Kann das mit dem Stilllegen der AGR zu tun haben und wenn ja warum wird die Anzeige so deutlich beeinflusst? I haven't been able to determine whether the consumption has actually increased yet, as I haven't refilled it.

Greetings.
Reuselkopp.
Golf 4 Variant Modell 05, ASZ mit 330000, ERF Getriebe, mit Zwangskorken, Softwareanpassung von Alex Günther
Golf 3 Variant Modell 98, AFN mit 281000km, ASD Getriebe, VNT15 mit großer Dose, ansonsten alles Original / verkauft


Translated on 08-07-2026, 2:22.
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Post31-08-2010, 9:42    Subject: Increased fuel consumption after MFA following AGR decommissioning Quote

Is the increased consumption real, or is it just a display or calculation error in the MFA (multifunction display)?

Without the AGR (Exhaust Gas Recirculation) system, the warm-up phase is naturally longer. Given your driving style and the distances you typically travel, could the warm-up phase have become so extended that your trips aren't long enough to allow the engine to reach its operating temperature? 0.6 liters sounds suspicious in that regard.
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Translated on 08-07-2026, 2:23.
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reuselkopp
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Post31-08-2010, 11:03    Subject: Increased fuel consumption after MFA following AGR decommissioning Quote

Hi,

As I mentioned before, I can't say for sure if there's a real increase in fuel consumption because I haven't refueled yet. If it's a calculation error, I wonder where it's coming from? My driving route hasn't changed. The commute to and from work is 50 km, which is 10 km of country road and then 40 km of highway. The return trip is the same route in reverse.

Regards,
Reuselkopp.
Golf 4 Variant Modell 05, ASZ mit 330000, ERF Getriebe, mit Zwangskorken, Softwareanpassung von Alex Günther
Golf 3 Variant Modell 98, AFN mit 281000km, ASD Getriebe, VNT15 mit großer Dose, ansonsten alles Original / verkauft


Translated on 08-07-2026, 2:24.
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Octavia_4x4
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Post31-08-2010, 13:09    Subject: Increased fuel consumption after MFA following AGR decommissioning Quote

With this kind of weather, I don't think the warm-up phase is as important as it is in the winter...

calculate the actual consumption icon_smile.gif


Translated on 08-07-2026, 2:24.
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